Patent US3548048A successfully refreshed from Google Patents.
US3548048A
Expired / Lapsed
US
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Method of producing polymeric articles resistant to fibrillation
Assignee: Phillips Petroleum Co
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Filing: 1968-05-20
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Granted: 1970-12-15
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Expires: 1988-05-20
Abstract
No abstract record available.
Inventors
- 👤 James K Hughes
- 👤 Jake E Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:00
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/42; D01D5/423; B; B29; B29C; B29C48/00; B29C55/00; B29C55/02; B29D; B29D7/00; C; C08; C08J; C08J7/00; C08J7/08; B29C48/03; Y; Y10; Y10S; Y10S264/00; Y10S264/47
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3118001A
Cited
US3066006A
Cited
US3217074A
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US3336174A
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US3416714A
Cited
US3454460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |